101
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Ma Z, Jin X, Qian Z, Li F, Xu M, Zhang Y, Kang X, Li H, Gao X, Zhao L, Zhang Z, Zhang Y, Wu S, Sun H. Deletion of clock gene Bmal1 impaired the chondrocyte function due to disruption of the HIF1α-VEGF signaling pathway. Cell Cycle 2019; 18:1473-1489. [PMID: 31107137 PMCID: PMC6592248 DOI: 10.1080/15384101.2019.1620572] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 02/28/2019] [Accepted: 04/07/2019] [Indexed: 01/09/2023] Open
Abstract
Several studies have demonstrated the core circadian rhythm gene Bmal1 could regulate the clock control genes (CCGs) expression and maintain the integrity in cartilage tissue. In addition, its abnormal expression is connected with the occurrence and development of several diseases including osteoarthritis (OA). However, the relationship between Bmal1 and cartilage development still needs to be fully elucidated. Here, we bred tamoxifen-induced cartilage-specific knockout mice to learn the effects of Bmal1 on the cartilage development and its underlying mechanisms at specific time points. We observed that Bmal1 ablated mice showed growth retardation during puberty, and the length of whole growth plate and the proliferation zone were both shorter than those in the control group. Deletion of Bmal1 significantly inhibited the chondrocytes proliferation and activated cells apoptosis in the growth plate. Meanwhile, knockout of Bmal1 attenuated the expression of VEGF and HIF1α and enhanced the level of MMP13 and Runx2 in the growth plate chondrocytes. Consistent with these findings in vivo, ablation of Bmal1 could also lead to decrease chondrocytes proliferation, the expression of HIF1α and VEGF and elevate apoptosis in cultured chondrocytes. These findings suggest that Bmal1 plays a pivotal role in cartilage development by regulating the HIF1α-VEGF signaling pathway.
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Affiliation(s)
- Zhengmin Ma
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Medical School of Xi’an Jiaotong University, Xi’an, Shaanxi Province, People’s Republic of China
| | - Xinxin Jin
- Center for Translational Medicine, First Affiliated Hospital of Xi’an Jiaotong University School of Medicine, Xi’an, Shaanxi Province, People’s Republic of China
| | - Zhuang Qian
- Center for Translational Medicine, First Affiliated Hospital of Xi’an Jiaotong University School of Medicine, Xi’an, Shaanxi Province, People’s Republic of China
| | - Fang Li
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Medical School of Xi’an Jiaotong University, Xi’an, Shaanxi Province, People’s Republic of China
| | - Mao Xu
- Center for Translational Medicine, First Affiliated Hospital of Xi’an Jiaotong University School of Medicine, Xi’an, Shaanxi Province, People’s Republic of China
| | - Ying Zhang
- Center for Translational Medicine, First Affiliated Hospital of Xi’an Jiaotong University School of Medicine, Xi’an, Shaanxi Province, People’s Republic of China
| | - Xiaomin Kang
- Center for Translational Medicine, First Affiliated Hospital of Xi’an Jiaotong University School of Medicine, Xi’an, Shaanxi Province, People’s Republic of China
| | - Huixia Li
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Medical School of Xi’an Jiaotong University, Xi’an, Shaanxi Province, People’s Republic of China
| | - Xin Gao
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Medical School of Xi’an Jiaotong University, Xi’an, Shaanxi Province, People’s Republic of China
| | - Liting Zhao
- Center for Translational Medicine, First Affiliated Hospital of Xi’an Jiaotong University School of Medicine, Xi’an, Shaanxi Province, People’s Republic of China
| | - Zhuanmin Zhang
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Medical School of Xi’an Jiaotong University, Xi’an, Shaanxi Province, People’s Republic of China
| | - Yan Zhang
- Center for Translational Medicine, First Affiliated Hospital of Xi’an Jiaotong University School of Medicine, Xi’an, Shaanxi Province, People’s Republic of China
| | - Shufang Wu
- Center for Translational Medicine, First Affiliated Hospital of Xi’an Jiaotong University School of Medicine, Xi’an, Shaanxi Province, People’s Republic of China
| | - Hongzhi Sun
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Medical School of Xi’an Jiaotong University, Xi’an, Shaanxi Province, People’s Republic of China
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Sun Q, Yang Y, Peng X, Zhang Y, Gao Y, Wang F, Zhang Y, Feng W, Yang W, Kang X. Coagulation parameters predictive of polycystic ovary syndrome. Eur J Obstet Gynecol Reprod Biol 2019; 240:36-40. [PMID: 31226575 DOI: 10.1016/j.ejogrb.2019.06.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 06/06/2019] [Accepted: 06/12/2019] [Indexed: 01/01/2023]
Abstract
OBJECTIVE To explore coagulation parameters in association with polycystic ovarian syndrome (PCOS) and establish a model for predicting the risk of PCOS. STUDY DESIGN This study included 181 outpatients with PCOS. A total of 301 women who attempted to seek pre-pregnancy consultation at the Department of Gynecology of our hospital were included in the control group, and six coagulation parameters were measured for all included subjects. A logistic regression model was built based on the training dataset using the purposeful selection method to select important predictors. The performance of the established model was validated on the test dataset. RESULTS There were statistically significant differences found among all coagulation parameters except D-Dimer (DD, P = 0.080). The purposeful selection method selected age (odds ratio [OR] = 0.89; p = 0.008), prothrombin time (PT, OR = 0.68, p < 0.0001), thrombin time (TT, OR = 3.30; p = 0.0005), and fibrin degradation products (FDP, OR = 0.24; p = 0.0002) as important predictors of PCOS risk. The receiver operating characteristic (ROC) curve analysis indicated that the area under the ROC curve (AUC) of the model was 0.81 for the training dataset with an optimal cut-off point of the predicted probability of 0.45, leading to a sensitivity of 0.71 and a specificity of 0.82. The AUC was 0.79 for the test data. CONCLUSIONS It was found that the coagulation parameters, including PT, TT, and FDP, are predictive of PCOS. These results highlight the potential of anti-coagulation therapies to lower the risk of adverse outcomes in women with PCOS.
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Affiliation(s)
- Qian Sun
- Department of Gynecology, The First People's Hospital of Lianyungang, Lianyung, Jiangsu, China
| | - Yan Yang
- Department of Laboratory, The First People's Hospital of Lianyungang, Lianyung, Jiangsu, China
| | - Xuenan Peng
- Department of Clinical Medicine, Medical College of Soochow University, Soochow, Jiangsu, China
| | - Yunyan Zhang
- Department of Laboratory, The First People's Hospital of Lianyungang, Lianyung, Jiangsu, China
| | - Yuan Gao
- Department of Gynecology, The First People's Hospital of Lianyungang, Lianyung, Jiangsu, China
| | - Fang Wang
- Department of Gynecology, The First People's Hospital of Lianyungang, Lianyung, Jiangsu, China
| | - Yang Zhang
- Department of Gynecology, The First People's Hospital of Lianyungang, Lianyung, Jiangsu, China
| | - Wen Feng
- Department of Gynecology, The First People's Hospital of Lianyungang, Lianyung, Jiangsu, China
| | - Wen Yang
- Department of Gynecology, The First People's Hospital of Lianyungang, Lianyung, Jiangsu, China.
| | - Xiaomin Kang
- Department of Reproductive Medical Centre, The First People's Hospital of Yunnan Province, Kunming, Yunnan, China.
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103
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Liang J, Mao L, Kang X, Abdiryim D, Hu F. 317 Mechanism of SO2-induced oxidation and inflammatory injury of human skin keratinocytes. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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104
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Kang X, Wang Y, Liang J, Lei Z. 810 Expression of activity-induced Cytidine Deaminase in melanoma and its correlation with the BRAF mutation and clinicopathological features. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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105
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Zhang J, Kang X. 257 Risk factors for infantile hemangioma: A systematic review and meta-analysis. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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106
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Yang W, Wu Z, Yu M, Peng X, Lu W, Feng W, Kang X. Characteristics of midluteal phase uterine artery hemodynamics in patients with recurrent pregnancy loss. J Obstet Gynaecol Res 2019; 45:1230-1235. [PMID: 30977230 DOI: 10.1111/jog.13944] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 02/02/2019] [Indexed: 11/30/2022]
Abstract
AIM To study the association in resistance to uterine artery blood flow and recurrent pregnancy loss (RPL) and find its potential influencing factors. METHODS A retrospective study was conducted in 870 RPL and 237 non-RPL patients visiting to the Clinic from January 2014 to February 2018. All participants underwent comprehensive examinations and were scanned by transvaginal Doppler ultrasonography during the midluteal phase to measure the pulsatility index (PI), resistance index (RI) and systolic/diastolic ratio (S/D) values of the left and right main uterine arteries. P value less than 0.05 was considered statistically significant. RESULTS The mean PI, RI and S/D values for uterine arteries were significantly higher in RPL patients than in non-RPL patients (P < 0.001). When subjects were grouped according to the different etiologies of RPL, significant higher indices of uterine arteries were found in RPL patients with antiphospholipid syndrome (P < 0.001), autoimmune diseases (P < 0.001), endocrinological abnormalities (P < 0.05), thrombophilia (P < 0.001), uterine anomalies (P < 0.01) and unexplained RPL (P < 0.001). No differences were found between patients with chromosomal anomalies and uterine arteries blood flow (P > 0.05). In RPL patients, mean PI, mean RI and mean S/D values shows no difference among groups (P > 0.05). The Similar results were observed in age and number of spontaneous abortion (P > 0.05). CONCLUSION Impaired uterine artery blood perfusion may be an underlying pathology to RPL, and it can be used as an independent risk factor for pregnancy failure.
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Affiliation(s)
- Wen Yang
- Department of Gynecology, The People's Hospital of Lianyungang, Lianyungang, China
| | - Ze Wu
- Department of Reproductive Medical Center, The First People's Hospital of Yunnan Province, Kunming, China
| | - Ming Yu
- Department of Gynecology, The People's Hospital of Lianyungang, Lianyungang, China
| | - Xuenan Peng
- School of Medicine, Suzhou University, Suzhou, China
| | - Wei Lu
- Department of Gynecology, The People's Hospital of Lianyungang, Lianyungang, China
| | - Wen Feng
- Department of Gynecology, The People's Hospital of Lianyungang, Lianyungang, China
| | - Xiaomin Kang
- Department of Reproductive Medical Center, The First People's Hospital of Yunnan Province, Kunming, China
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107
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Ren T, Li W, Liu D, Liang K, Wang X, Li H, Jiang R, Tian Y, Kang X, Li Z. Two insertion/deletion variants in the promoter region of the QPCTL gene are significantly associated with body weight and carcass traits in chickens. Anim Genet 2019; 50:279-282. [PMID: 30974000 DOI: 10.1111/age.12741] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/09/2018] [Indexed: 01/23/2023]
Abstract
Glutaminyl-peptide cyclotransferase-like (QPCTL) is an isoenzyme of glutaminyl-peptide cyclotransferase (QPCT). QPCTL and QPCT catalyze the formation of N-terminal modified pyroglutamate-fractalkine and the chemokine CCL2. The objective of this study was to investigate the association between insertions/deletions in the chicken QPCTL promoter region with growth traits in chickens. We first detected two insertion/deletion variants of QPCTL via whole-genome resequencing analysis of DNA samples from Xichuan chickens. A total of 1896 individuals from 12 breeds were genotyped for 52- and 224-bp insertions/deletions. We found two novel insertions/deletions in the promoter region of the chicken QPCTL gene and studied their association with chicken body weight and carcass traits. Our findings show that QPCTL can be a molecular marker for chicken genetics and breeding programs.
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Affiliation(s)
- T Ren
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China
| | - W Li
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China
| | - D Liu
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China
| | - K Liang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China
| | - X Wang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China
| | - H Li
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China.,Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Zhengzhou, 450002, China
| | - R Jiang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China.,Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Zhengzhou, 450002, China
| | - Y Tian
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China.,Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Zhengzhou, 450002, China
| | - X Kang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China.,Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Zhengzhou, 450002, China
| | - Z Li
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China.,Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Zhengzhou, 450002, China
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108
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Wu Z, Dong Y, Ma Y, Li Y, Li L, Lin N, Li Y, Zhuan L, Bai Y, Luo X, Kang X. Progesterone elevation on the day of hCG trigger has detrimental effect on live birth rate in low and intermediate ovarian responders, but not in high responders. Sci Rep 2019; 9:5127. [PMID: 30914679 PMCID: PMC6435811 DOI: 10.1038/s41598-019-41499-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 03/11/2019] [Indexed: 02/04/2023] Open
Abstract
Progesterone elevation (PE) on the day of hCG trigger is associated with decreased pregnancy outcome in fresh cycles. Evidence for this comes from overall patient estimates that mostly ignore different ovarian responses. To compare the impacts of PE on the day of hCG trigger on live birth rates (LBs) in low, intermediate and high ovarian responders and to explore the cut-off value for PE in different populations according to the ovarian response, we retrospectively analyzed a total of 2,351 patients receiving fresh assisted reproduction technology (ART) transfer cycles with GnRH agonist using a long or short protocol. Trend and multivariate logistic regression analyses were performed to identify the cutoff values of PE and to evaluate the effects of PE on LB rates (LBRs) in different ovarian responders. The study found that PE has a detrimental effect on LBRs in low to intermediate ovarian responders rather than in high responders. The cut-off values for PE were 1.0 ng/mL and 2.0 ng/mL for low and intermediate ovarian responders, respectively. The different associations between PE and LBRs according to ovarian response could more accurately predict the prognosis of the IVF cycle and could be used to optimize the treatment of patients undergoing In Vitro Fertilization (IVF)/ Intracytoplasmic Sperm Injection (ICSI).
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Affiliation(s)
- Ze Wu
- Department of Reproductive Medicine, The First People's Hospital of Yunnan Province, Kunming, China.,Reproductive Medical Center of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
| | - Yunhua Dong
- Department of Reproductive Medicine, The First People's Hospital of Yunnan Province, Kunming, China.,Reproductive Medical Center of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
| | - Yanping Ma
- Department of Reproductive Medicine, The First People's Hospital of Yunnan Province, Kunming, China.,Reproductive Medical Center of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
| | - Yonggang Li
- Department of Reproductive Medicine, The First People's Hospital of Yunnan Province, Kunming, China.,Reproductive Medical Center of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
| | - Lei Li
- Department of Reproductive Medicine, The First People's Hospital of Yunnan Province, Kunming, China.,Reproductive Medical Center of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
| | - Na Lin
- Department of Reproductive Medicine, The First People's Hospital of Yunnan Province, Kunming, China.,Reproductive Medical Center of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
| | - Yunxiu Li
- Department of Reproductive Medicine, The First People's Hospital of Yunnan Province, Kunming, China.,Reproductive Medical Center of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
| | - Li Zhuan
- Department of Reproductive Medicine, The First People's Hospital of Yunnan Province, Kunming, China.,Reproductive Medical Center of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
| | - Yun Bai
- Department of Reproductive Medicine, The First People's Hospital of Yunnan Province, Kunming, China.,Reproductive Medical Center of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
| | - Xi Luo
- Department of Reproductive Medicine, The First People's Hospital of Yunnan Province, Kunming, China. .,Reproductive Medical Center of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China.
| | - Xiaomin Kang
- Department of Reproductive Medicine, The First People's Hospital of Yunnan Province, Kunming, China. .,Reproductive Medical Center of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China.
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109
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Kang X, Shelmerdine SC, Hurtado I, Bevilacqua E, Hutchinson C, Mandalia U, Segers V, Cos Sanchez T, Cannie MM, Carlin A, Sebire NJ, Arthurs OJ, Jani JC. Postmortem examination of human fetuses: comparison of two-dimensional ultrasound with invasive autopsy. Ultrasound Obstet Gynecol 2019; 53:229-238. [PMID: 28782198 DOI: 10.1002/uog.18828] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Revised: 06/09/2017] [Accepted: 07/25/2017] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To assess the diagnostic accuracy of postmortem ultrasound performed by operators blinded to prenatal findings and to invasive autopsy results in fetuses at different gestational ages and to investigate the effect of various parameters on its diagnostic success. METHODS We performed postmortem two-dimensional ultrasound examination, blinded to clinical details, on 163 fetuses at 13-42 weeks' gestation. Logistic regression analysis was used to investigate the effect of: (i) gestational age at postmortem ultrasound, (ii) presence of maceration and (iii) mode of death, on whether the exam succeeded or failed to reach a diagnosis. In 123 cases in which invasive autopsy was available, the diagnostic accuracy of ultrasound in detecting major organ abnormalities was evaluated, using invasive autopsy as the gold standard. RESULTS For the fetal brain, postmortem ultrasound exam was non-diagnostic in significantly more fetuses with maceration (39.5%; 17/43) vs those without maceration (20.0%; 24/120) (P = 0.013). For the fetal thorax, the exam was non-diagnostic in 34.1% (15/44) of fetuses < 20 weeks of gestation and in 10.9% (13/119) of fetuses ≥ 20 weeks (P < 0.001). For the heart and abdominal organs, there was no association between non-diagnostic postmortem ultrasound and the variables tested. For fetuses < 20 weeks, specificity of postmortem ultrasound examination was 83.3% for detection of anomalies of the brain, 68.6% for the thorax and 77.4% for the heart. For fetuses ≥ 20 weeks, sensitivity and specificity were, respectively, 61.9% and 74.2% for detection of anomalies of the brain, 29.5% and 87.0% for the thorax and 65.0% and 83.1% for the heart. For the fetal abdominal organs, sensitivity was 60.7% and specificity 75.8%, and postmortem ultrasound was particularly useful for detection of abnormalities of the kidneys, irrespective of gestational age. CONCLUSION Although maceration may lead to failure of postmortem ultrasound examination in some cases, this technique achieves diagnostically acceptable levels of accuracy for fetal brain and abdominal organs, compared with conventional autopsy. It may therefore play a role as a first-line examination before other virtual autopsy techniques are indicated. Copyright © 2017 ISUOG. Published by John Wiley & Sons Ltd.
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Affiliation(s)
- X Kang
- Department of Obstetrics and Gynecology, University Hospital Brugmann, Université Libre de Bruxelles, Brussels, Belgium
| | - S C Shelmerdine
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - I Hurtado
- Department of Obstetrics and Gynecology, University Hospital Brugmann, Université Libre de Bruxelles, Brussels, Belgium
| | - E Bevilacqua
- Department of Obstetrics and Gynecology, University Hospital Brugmann, Université Libre de Bruxelles, Brussels, Belgium
| | - C Hutchinson
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
- UCL Great Ormond Street Institute of Child Health, London, UK
| | - U Mandalia
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - V Segers
- Department of Feto-Pathology, University Hospital Brugmann, Université Libre de Bruxelles, Brussels, Belgium
| | - T Cos Sanchez
- Department of Obstetrics and Gynecology, University Hospital Brugmann, Université Libre de Bruxelles, Brussels, Belgium
| | - M M Cannie
- Department of Radiology, University Hospital Brugmann, Université Libre de Bruxelles, Brussels, Belgium
- Department of Radiology, UZ Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - A Carlin
- Department of Obstetrics and Gynecology, University Hospital Brugmann, Université Libre de Bruxelles, Brussels, Belgium
| | - N J Sebire
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
- UCL Great Ormond Street Institute of Child Health, London, UK
| | - O J Arthurs
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
- UCL Great Ormond Street Institute of Child Health, London, UK
| | - J C Jani
- Department of Obstetrics and Gynecology, University Hospital Brugmann, Université Libre de Bruxelles, Brussels, Belgium
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Zhang H, Kang X, Xiao N, Gao M, Zhao Y, Zhang B, Song Y. Intracellular expression ofVitreoscillahaemoglobin improves lipid production inYarrowia lipolytica. Lett Appl Microbiol 2019; 68:248-257. [DOI: 10.1111/lam.13111] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 12/27/2018] [Accepted: 12/28/2018] [Indexed: 12/24/2022]
Affiliation(s)
- H. Zhang
- Colin Ratledge Center for Microbial Lipids; School of Agricultural Engineering and Food Science; Shandong University of Technology; Zibo Shandong China
| | - X. Kang
- Colin Ratledge Center for Microbial Lipids; School of Agricultural Engineering and Food Science; Shandong University of Technology; Zibo Shandong China
| | - N. Xiao
- Colin Ratledge Center for Microbial Lipids; School of Agricultural Engineering and Food Science; Shandong University of Technology; Zibo Shandong China
| | - M. Gao
- Colin Ratledge Center for Microbial Lipids; School of Agricultural Engineering and Food Science; Shandong University of Technology; Zibo Shandong China
| | - Y. Zhao
- Colin Ratledge Center for Microbial Lipids; School of Agricultural Engineering and Food Science; Shandong University of Technology; Zibo Shandong China
| | - B. Zhang
- School of Food Science and Technology; Jiangnan University; Wuxi Jiangsu China
| | - Y. Song
- Colin Ratledge Center for Microbial Lipids; School of Agricultural Engineering and Food Science; Shandong University of Technology; Zibo Shandong China
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111
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Chen XJ, Tong ZC, Kang X, Wang ZC, Huang GL, Yang TM, Dong L. ERCC polymorphisms and risk of osteosarcoma: a meta-analysis. Eur Rev Med Pharmacol Sci 2018; 22:6658-6666. [PMID: 30402838 DOI: 10.26355/eurrev_201810_16142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The association between excision repair cross-complementation (ERCC) gene family (ERCC1 and ERCC2) and osteosarcoma risk was controversial. The aim of this study was to evaluate the association between ERCC1 or ERCC2 and osteosarcoma risk by systematic meta-analysis. MATERIALS AND METHODS Relative studies were retrieved from electronic databases without language restriction. The last search was updated on March 2017. Quality assessment was analyzed by the Newcastle-Ottawa Scale (NOS) score, which was recommended by the Agency for Healthcare Research and Quality (AHRQ). Meta-analysis was conducted by R language package (R 3.12). RESULTS This meta-analysis was performed based on 4 case-control studies that included 1208 cases and 2448 controls. The ERCC2-rs1799793 AA+AC > CC (OR=1.3428, 95% CI=1.0201; 1.7674) had an effect on the risk of osteosarcoma development, whereas, there were no significant associations among the other ERCC SNPs (ERCC1 rs3212986, ERCC1 rs11615, and ERCC2 rs13181) and osteosarcoma. CONCLUSIONS The ERCC2 rs1799793 polymorphism is related to the high risk of osteosarcoma development.
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Affiliation(s)
- X-J Chen
- The Department of Bone Diseases, Hong-Hui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, China.
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Wu F, Gao G, Zhou C, Kang X, Zhou Y. A phase III, randomized, open-label, multicenter study of SHR-1210 (anti-PD-1 antibody) in combination with pemetrexed and carboplatin as first line therapy in subjects with advanced/metastatic non-squamous non-small cell lung cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy292.126] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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113
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Li H, Li D, Ma Z, Qian Z, Kang X, Jin X, Li F, Wang X, Chen Q, Sun H, Wu S. Defective autophagy in osteoblasts induces endoplasmic reticulum stress and causes remarkable bone loss. Autophagy 2018; 14:1726-1741. [PMID: 29962255 PMCID: PMC6135623 DOI: 10.1080/15548627.2018.1483807] [Citation(s) in RCA: 124] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 05/15/2018] [Accepted: 05/24/2018] [Indexed: 12/13/2022] Open
Abstract
Macroautophagy/autophagy is a highly regulated process involved in the turnover of cytosolic components, however its pivotal role in maintenance of bone homeostasis remains elusive. In the present study, we investigated the direct role of ATG7 (autophagy related 7) during developmental and remodeling stages in vivo using osteoblast-specific Atg7 conditional knockout (cKO) mice. Atg7 cKO mice exhibited a reduced bone mass at both developmental and adult age. The trabecular bone volume of Atg7 cKO mice was significantly lower than that of controls at 5 months of age. This phenotype was attributed to decreased osteoblast formation and matrix mineralization, accompanied with an increased osteoclast number and the extent of the bone surface covered by osteoclasts as well as an elevated secretion of TNFSF11/RANKL (tumor necrosis factor [ligand] superfamily, member 11), and a decrease in TNFRSF11B/OPG (tumor necrosis factor receptor superfamily, member 11b [osteoprotegerin]). Remarkably, Atg7 deficiency in osteoblasts triggered endoplasmic reticulum (ER) stress, whereas attenuation of ER stress by administration of phenylbutyric acid in vivo abrogated Atg7 ablation-mediated effects on osteoblast differentiation, mineralization capacity and bone formation. Consistently, Atg7 deficiency impeded osteoblast mineralization and promoted apoptosis partially in DDIT3/CHOP (DNA-damage-inducible transcript 3)- and MAPK8/JNK1 (mitogen-activated protein kinase 8)-SMAD1/5/8-dependent manner in vitro, while reconstitution of Atg7 could improve ER stress and restore skeletal balance. In conclusion, our findings provide direct evidences that autophagy plays crucial roles in regulation of bone homeostasis and suggest an innovative therapeutic strategy against skeletal diseases.
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Affiliation(s)
- Huixia Li
- The First Affiliated Hospital of Xi’an Jiaotong University; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi’an Jiaotong University Health Science Center, Xi’an, Shaanxi, China
| | - Danhui Li
- The First Affiliated Hospital of Xi’an Jiaotong University; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi’an Jiaotong University Health Science Center, Xi’an, Shaanxi, China
| | - Zhengmin Ma
- The First Affiliated Hospital of Xi’an Jiaotong University; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi’an Jiaotong University Health Science Center, Xi’an, Shaanxi, China
| | - Zhuang Qian
- Center for Translational Medicine, the First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Xiaomin Kang
- Center for Translational Medicine, the First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Xinxin Jin
- Center for Translational Medicine, the First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Fang Li
- The First Affiliated Hospital of Xi’an Jiaotong University; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi’an Jiaotong University Health Science Center, Xi’an, Shaanxi, China
| | - Xinluan Wang
- Translational Medicine R&D Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Qian Chen
- Department of Orthopaedics, Alpert Medical School of Brown University, Rhode Island Hospital, Providence, RI, USA
- Bone and Joint Research Center, the First Affiliated Hospital of Medical School, Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Hongzhi Sun
- The First Affiliated Hospital of Xi’an Jiaotong University; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi’an Jiaotong University Health Science Center, Xi’an, Shaanxi, China
| | - Shufang Wu
- The First Affiliated Hospital of Xi’an Jiaotong University; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi’an Jiaotong University Health Science Center, Xi’an, Shaanxi, China
- Center for Translational Medicine, the First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
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114
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Kang X, Yang W, Wang R, Xie T, Li H, Feng D, Jin X, Sun H, Wu S. Sirtuin-1 (SIRT1) stimulates growth-plate chondrogenesis by attenuating the PERK-eIF-2α-CHOP pathway in the unfolded protein response. J Biol Chem 2018; 293:8614-8625. [PMID: 29653943 DOI: 10.1074/jbc.m117.809822] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 03/21/2018] [Indexed: 12/20/2022] Open
Abstract
The NAD+-dependent deacetylase sirtuin-1 (SIRT1) has emerged as an important regulator of chondrogenesis and cartilage homeostasis, processes that are important for physiological skeletal growth and that are dysregulated in osteoarthritis. However, the functional role and underlying mechanism by which SIRT1 regulates chondrogenesis remain unclear. Using cultured rat metatarsal bones and chondrocytes isolated from rat metatarsal rudiments, here we studied the effects of the SIRT1 inhibitor EX527 or of SIRT1 siRNA on chondrocyte proliferation, hypertrophy, and apoptosis. We show that EX527 or SIRT1 siRNA inhibits chondrocyte proliferation and hypertrophy and induces apoptosis. We also observed that SIRT1 inhibition mainly induces the PERK-eIF-2α-CHOP axis of the endoplasmic reticulum (ER) stress response in growth-plate chondrocytes. Of note, EX527- or SIRT1 siRNA-mediated inhibition of metatarsal growth and growth-plate chondrogenesis were partly neutralized by phenylbutyric acid, a chemical chaperone that attenuates ER stress. Moreover, EX527-mediated impairment of chondrocyte function (i.e. of chondrocyte proliferation, hypertrophy, and apoptosis) was partly reversed in CHOP-/- cells. We also present evidence that SIRT1 physically interacts with and deacetylates PERK. Collectively, our findings indicate that SIRT1 deacetylates PERK and attenuates the PERK-eIF-2α-CHOP axis of the unfolded protein response pathway and thereby promotes growth-plate chondrogenesis and longitudinal bone growth.
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Affiliation(s)
- Xiaomin Kang
- From the Center for Translational Medicine, the First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061, China
| | - Wei Yang
- From the Center for Translational Medicine, the First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061, China
| | - Ruiqi Wang
- From the Center for Translational Medicine, the First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061, China
| | - Tianping Xie
- From the Center for Translational Medicine, the First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061, China
| | - Huixia Li
- the Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China, and
| | - Dongxu Feng
- From the Center for Translational Medicine, the First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061, China.,the Hong Hui Hospital, Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710054, China
| | - Xinxin Jin
- From the Center for Translational Medicine, the First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061, China
| | - Hongzhi Sun
- the Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China, and
| | - Shufang Wu
- From the Center for Translational Medicine, the First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061, China,
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115
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Kang X, Dong L, Yang T, Wang Z, Huang G, Chen X. Clinical and radiographic outcomes of upper thoracic versus lower thoracic upper instrumented vertebrae for adult scoliosis: a meta-analysis. ACTA ACUST UNITED AC 2018; 51:e6651. [PMID: 29490003 PMCID: PMC5856438 DOI: 10.1590/1414-431x20176651] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2017] [Accepted: 11/20/2017] [Indexed: 12/02/2022]
Abstract
The aim of this study was to evaluate the clinical and radiographic outcomes of upper thoracic (UT) versus lower thoracic (LT) upper instrumented vertebrae (UIV) for adult scoliosis by meta-analysis. We conducted a literature search in three databases to retrieve related studies up to March 15, 2017. The preliminary screened studies were assessed by two reviewers according to the selection criteria. All analyses were carried out using the statistical software package R version 2.31. Odds ratios (OR) with 95% confidence intervals (CI) were used to describe the results. The I2 statistic and Q statistic test were used for heterogeneity assessment. Egger's test was performed to detect publication bias. To assess the effect of each study on the overall pooled OR or standardized mean difference (SMD), sensitive analysis was conducted. Ten trials published between 2007 and 2015 were eligible and included in our study. Meta-analysis revealed that the UT group was associated with more blood loss (SMD=0.4779, 95%CI=0.3349-0.6209, Z=6.55, P<0.0001) and longer operating time (SMD=0.5780, 95%CI=0.1971-0.958, Z=2.97, P=0.0029) than the LT group. However, there was no significant difference in Oswestry Disability Index, Scoliosis Research Society (SRS) function subscores, radiographic outcomes including sagittal vertical axis, lumbar lordosis, and thoracic kyphosis, length of hospital stay, and revision rates between the two groups. No evidence of publication bias was found between the two groups. Fusion from the lower thoracic spine (below T10) has as advantages a shorter operation time and less blood loss than upper thoracic spine (above T10) in posterior long-segment fixation for degenerative lumbar scoliosis.
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Affiliation(s)
- X Kang
- Hong-Hui Hospital, Department of Bone Diseases, Xi'an Jiaotong University, Xi'an, China
| | - L Dong
- Hong-Hui Hospital, Department of Bone Diseases, Xi'an Jiaotong University, Xi'an, China
| | - T Yang
- Hong-Hui Hospital, Department of Bone Diseases, Xi'an Jiaotong University, Xi'an, China
| | - Z Wang
- Hong-Hui Hospital, Department of Bone Diseases, Xi'an Jiaotong University, Xi'an, China
| | - G Huang
- Hong-Hui Hospital, Department of Bone Diseases, Xi'an Jiaotong University, Xi'an, China
| | - X Chen
- Hong-Hui Hospital, Department of Bone Diseases, Xi'an Jiaotong University, Xi'an, China
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116
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Kang X, Song X. P1.07-029 Correlation Study Between Plasma sPD-L1 and the Efficacy and Prognosis of Patients with Non-Small Cell Lung Cancer. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.947] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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117
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Kang X, Dong C, Xu G, Yin H, Chen K, Zeng H. P3.05-003 Serum Thioredoxin Reductase 1 as a Diagnostic Biomarker for Non-Small Cell Lung Cancer. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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118
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Kang X, Zhou H, Xuan T, Yan W, Gong Y, Dai L, Guan Y, Yang Y, Yang H, Fu H, Fan M, Lin Y, Liang Z, Xiong H, Yang L, Yi X, Chen K. P3.16-053 Genomic Challenges for Lung Cancers with Multiple Pulmonary Sites of Involvement. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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119
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Yang W, Kang X, Qin N, Li F, Jin X, Ma Z, Qian Z, Wu S. Melatonin protects chondrocytes from impairment induced by glucocorticoids via NAD +-dependent SIRT1. Steroids 2017; 126:24-29. [PMID: 28803211 DOI: 10.1016/j.steroids.2017.08.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 08/02/2017] [Accepted: 08/07/2017] [Indexed: 12/16/2022]
Abstract
Intra-articular injection of glucocorticoids is used to relieve pain and inflammation in osteoarthritis patients, which is occasionally accompanied with the serious side effects of glucocorticoids in collagen-producing tissue. Melatonin is the major hormone released from the pineal gland and its beneficial effects on cartilage has been suggested. In the present study, we investigated the protective role of melatonin on matrix degeneration in chondrocytes induced by dexamethasone (Dex). The chondrocytes isolated from mice knee joint were treated with Dex, melatonin, EX527 and siRNA targeted for SIRT6, respectively. Dex treatment induced the loss of the extracellular matrix, NAD+/NADH ratio and NADPH concentration in chondrocytes. Melatonin alone have no effect on the quantity of proteoglycans and collagen type IIa1, however, the pretreatment of melatonin reversed the negative effects induced by Dex. Meanwhile, the significant decrease in NAD+/NADH ratio and NADPH concentration in Dex group were up-regulated by pretreatment of melatonin. Furthermore, it was revealed that inhibition of SIRT1 blocked the protective effects of melatonin. The enhancement of NAD+-dependent SIRT1 activity contributes to the chondroprotecfive effects of melatonin, which has a great benefit to prevent dexamethasone-induced chondrocytes impairment.
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Affiliation(s)
- Wei Yang
- Center for Translational Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Xiaomin Kang
- Center for Translational Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Na Qin
- Center for Translational Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Feng Li
- Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xinxin Jin
- Center for Translational Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Zhengmin Ma
- Medical School of Xi'an Jiaotong University, Xi'an, China
| | - Zhuang Qian
- Center for Translational Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Shufang Wu
- Center for Translational Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
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120
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Kang X, Yang W, Feng D, Jin X, Ma Z, Qian Z, Xie T, Li H, Liu J, Wang R, Li F, Li D, Sun H, Wu S. Cartilage-Specific Autophagy Deficiency Promotes ER Stress and Impairs Chondrogenesis in PERK-ATF4-CHOP-Dependent Manner. J Bone Miner Res 2017; 32:2128-2141. [PMID: 28304100 DOI: 10.1002/jbmr.3134] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 03/13/2017] [Accepted: 03/15/2017] [Indexed: 01/07/2023]
Abstract
Autophagy is activated during nutritionally depleted or hypoxic conditions to facilitate cell survival. Because growth plate is an avascular and hypoxic tissue, autophagy may have a crucial role during chondrogenesis; however, the functional role and underlying mechanism of autophagy in regulation of growth plate remains elusive. In this study, we generated TamCart Atg7-/- (Atg7cKO) mice to explore the role of autophagy during endochondral ossification. Atg7cKO mice exhibited growth retardation associated with reduced chondrocyte proliferation and differentiation, and increased chondrocyte apoptosis. Meanwhile, we observed that Atg7 ablation mainly induced the PERK-ATF4-CHOP axis of the endoplasmic reticulum (ER) stress response in growth plate chondrocytes. Although Atg7 ablation induced ER stress in growth plate chondrocytes, the addition of phenylbutyric acid (PBA), a chemical chaperone known to attenuate ER stress, partly neutralized such effects of Atg7 ablation on longitudinal bone growth, indicating the causative interaction between autophagy and ER stress in growth plate. Consistent with these findings in vivo, we also observed that Atg7 ablation in cultured chondrocytes resulted in defective autophagy, elevated ER stress, decreased chondrocytes proliferation, impaired expression of col10a1, MMP-13, and VEGFA for chondrocyte differentiation, and increased chondrocyte apoptosis, while such effects were partly nullified by reduction of ER stress with PBA. In addition, Atg7 ablation-mediated impaired chondrocyte function (chondrocyte proliferation, differentiation, and apoptosis) was partly reversed in CHOP-/- cells, indicating the causative role of the PERK-ATF4-CHOP axis of the ER stress response in the action of autophagy deficiency in chondrocytes. In conclusion, our findings indicate that autophagy deficiency may trigger ER stress in growth plate chondrocytes and contribute to growth retardation, thus implicating autophagy as an important regulator during chondrogenesis and providing new insights into the clinical potential of autophagy in cartilage homeostasis. © 2017 American Society for Bone and Mineral Research.
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Affiliation(s)
- Xiaomin Kang
- Center for Translational Medicine, First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi, People's Republic of China
| | - Wei Yang
- Center for Translational Medicine, First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi, People's Republic of China
| | - Dongxu Feng
- Center for Translational Medicine, First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi, People's Republic of China.,Hong Hui Hospital, Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi, People's Republic of China
| | - Xinxin Jin
- Center for Translational Medicine, First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi, People's Republic of China
| | - Zhengmin Ma
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China
| | - Zhuang Qian
- Center for Translational Medicine, First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi, People's Republic of China
| | - Tianping Xie
- Center for Translational Medicine, First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi, People's Republic of China
| | - Huixia Li
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China
| | - Jiali Liu
- Department of Clinical Laboratory, Second Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi, People's Republic of China
| | - Ruiqi Wang
- Center for Translational Medicine, First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi, People's Republic of China
| | - Fang Li
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China
| | - Danhui Li
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China
| | - Hongzhi Sun
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China
| | - Shufang Wu
- Center for Translational Medicine, First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi, People's Republic of China
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121
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Kang X, Yang W, Feng D, Jin X, Ma Z, Qian Z, Xie T, Li H, Liu J, Wang R, Li F, Li D, Sun H, Wu S. Addendum to "Cartilage-Specific Autophagy Deficiency Promotes ER Stress and Impairs Chondrogenesis in PERK-ATF4-CHOP-Dependent Manner". J Bone Miner Res 2017; 32:2145. [PMID: 29028133 DOI: 10.1002/jbmr.3207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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122
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Wang T, Kang X, He L, Liu Z, Xu H, Zhao A. Prediction of thrombophilia in patients with unexplained recurrent pregnancy loss using a statistical model. Int J Gynaecol Obstet 2017; 138:283-287. [PMID: 28504829 DOI: 10.1002/ijgo.12213] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 04/01/2017] [Accepted: 05/11/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Tongfei Wang
- Department of Obstetrics and Gynecology; Ren Ji Hospital; School of Medicine; Shanghai JiaoTong University; Shanghai China
| | - Xiaomin Kang
- Department of Obstetrics and Gynecology; Ren Ji Hospital; School of Medicine; Shanghai JiaoTong University; Shanghai China
| | - Liying He
- Department of Obstetrics and Gynecology; Ren Ji Hospital; School of Medicine; Shanghai JiaoTong University; Shanghai China
| | - Zhilan Liu
- Department of Obstetrics and Gynecology; Ren Ji Hospital; School of Medicine; Shanghai JiaoTong University; Shanghai China
| | - Haijing Xu
- Department of Obstetrics and Gynecology; Ren Ji Hospital; School of Medicine; Shanghai JiaoTong University; Shanghai China
| | - Aimin Zhao
- Department of Obstetrics and Gynecology; Ren Ji Hospital; School of Medicine; Shanghai JiaoTong University; Shanghai China
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123
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Luan X, Kang X, Li W, Dong Q. An investigation of the relationship between recurrent spontaneous abortion and memory T follicular helper cells. Am J Reprod Immunol 2017. [PMID: 28639391 DOI: 10.1111/aji.12714] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
PROBLEM Immune tolerance with respect to a semi-allogeneic fetus plays a key role in the establishment of a pregnancy. Memory T follicular helper (Tfh) cells have a central role in the regulation of the adaptive immune response. Much of our knowledge of memory Tfh cells' function comes from immune-related diseases. However, the true physiological characteristics of memory Tfh cells and their mode of action in pregnancy remain unclear. METHODS OF STUDY Deciduas and blood were obtained from 25 recurrent spontaneous abortion (RSA) patients undergoing surgical abortion and 19 normal women in early pregnancy undergoing elective termination. RSA patients were grouped into antibody-positive patients and antibody-negative patients, respectively. The memory Tfh cells with the CD4+ CXCR5+ PD1+ CCR7- and CD4+ CXCR5+ PD-1+ ICOS+ phenotypes were assessed by flow cytometry. The B cells were evaluated by flow cytometry. A correlation analysis of the subsets of memory Tfh cells and B cells in antibody-positive RSA patients was made by the Pearson test. RESULTS Memory Tfh cells with the CD4+ CXCR5+ PD1+ CCR7- and CD4+ CXCR5+ PD-1+ ICOS+ phenotypes showed a significant increase in RSA patients compared to women with a normal pregnancy who had chosen termination. When RSA patients were grouped according positive or negative antibodies, it was surprising to find that decidual CD4+ CXCR5+ PD-1+ ICOS+ memory Tfh cells significantly increased in RSA patients with positive antibody compared to RSA patients with negative antibody. However, the percentages of CD4+ CXCR5+ PD1+ CCR7- memory Tfh cells did not change in the deciduas of the two groups. Circulating and decidual B cells significantly increased in antibody-positive RSA patients compared with antibody-negative RSA patients. Correlation analysis indicated a strong association between the decidual CD4+ CXCR5+ PD-1+ ICOS+ memory Tfh cells and B cells in antibody-positive RSA patients. CONCLUSION These new findings provide unique insights into memory Tfh cells in mediating feto-maternal immune tolerance.
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Affiliation(s)
- Xiaorui Luan
- Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaomin Kang
- Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Weiping Li
- Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Qian Dong
- Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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124
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Ying Z, Xiang X, Song Y, Ding N, Lin Y, Zheng W, Wang X, Lin N, Tu M, Xie Y, Zhang C, Liu W, Deng L, Liu Y, Yue Y, Yu X, Liu H, Duan P, Chen F, Wu X, Huang X, Jones L, Kang X, Chen S, Zhu J. A PHASE I STUDY OF CHIMERIC ANTIGEN RECEPTORMODIFIED T CELLS DIRECTED AGAINST CD19 IN PATIENTS WITH RELAPSED OR REFRACTORYCD19(+) B CELL LYMPHOMAS: INTERIM ANALYSIS. Hematol Oncol 2017. [DOI: 10.1002/hon.2438_131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Z. Ying
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - X. Xiang
- Department of medicine; Marino Biotechnology Co., Ltd.; Beijing China
| | - Y. Song
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - N. Ding
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - Y. Lin
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - W. Zheng
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - X. Wang
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - N. Lin
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - M. Tu
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - Y. Xie
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - C. Zhang
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - W. Liu
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - L. Deng
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - Y. Liu
- Department of medicine; Marino Biotechnology Co., Ltd.; Beijing China
| | - Y. Yue
- Department of medicine; Marino Biotechnology Co., Ltd.; Beijing China
| | - X. Yu
- Department of medicine; Marino Biotechnology Co., Ltd.; Beijing China
| | - H. Liu
- Department of medicine; Marino Biotechnology Co., Ltd.; Beijing China
| | - P. Duan
- Department of medicine; Marino Biotechnology Co., Ltd.; Beijing China
| | - F. Chen
- Department of medicine; Marino Biotechnology Co., Ltd.; Beijing China
| | - X. Wu
- Department of medicine; Marino Biotechnology Co., Ltd.; Beijing China
| | - X.F. Huang
- Department of Molecular Microbiology and Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine; University of Southern California; Los Angeles USA
| | - L. Jones
- Department of Molecular Microbiology and Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine; University of Southern California; Los Angeles USA
| | - X. Kang
- Department of Molecular Microbiology and Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine; University of Southern California; Los Angeles USA
| | - S. Chen
- Department of medicine; Marino Biotechnology Co., Ltd.; Beijing China
| | - J. Zhu
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
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Kang X, Dong C, Shen BC, Dai L, Yan WP, Yang YB, Yin H, Xu G, Zeng H, Chen KN. 124 Plasma thioredoxin reductase 1 as a diagnostic marker for non-small cell lung cancer. Chest 2017. [DOI: 10.1016/j.chest.2017.04.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Abstract
On the basis of a study of a simplified model system and Set Theory, a novel pathway on the formation of polydopamine is proposed.
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Affiliation(s)
- Xiaomin Kang
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Wanhao Cai
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Song Zhang
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Shuxun Cui
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education
- Southwest Jiaotong University
- Chengdu 610031
- China
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127
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Kang X, Wang T, He L, Xu H, Liu Z, Zhao A. Effect of Low-Dose Aspirin on Midluteal Phase Uterine Artery Blood Flow in Patients With Recurrent Pregnancy Loss. J Ultrasound Med 2016; 35:2583-2587. [PMID: 27872414 DOI: 10.7863/ultra.16.01020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 02/03/2016] [Accepted: 03/02/2016] [Indexed: 06/06/2023]
Abstract
OBJECTIVES The purpose of this study was to evaluate differences in uterine artery blood flow parameters and pregnancy outcomes, if any. An investigation was conducted to determine the effects of low-dose aspirin on uterine artery blood flow indices in patients with recurrent pregnancy loss. METHODS This observational study included 353 Chinese women with a history of recurrent pregnancy loss and 85 women without a history of recurrent pregnancy loss (control group) from Ren Ji Hospital. All patients were scanned transvaginally with transvaginal Doppler sonography 6 to 8 days after ovulation to measure the pulsatility index (PI), resistive index (RI), and systolic-to-diastolic ratio (S/D) of the left and right main uterine arteries. Low-dose aspirin at a dose of 50 mg/d was administered orally in patients with recurrent pregnancy loss for 2 months, and the blood flow indices were measured subsequently. The Student t test was used for analysis of the results, P < .05 was considered significant. RESULTS The mean PI and S/D of the uterine arteries in the recurrent pregnancy loss group were significantly higher than in the control group. Although not statistically significant, the RI was higher in the recurrent pregnancy loss group than the control group. Moreover, the PI and S/D increased as the number of pregnancy losses increased. Significant enhancements of the PI and S/D were observed in patients with 4 or more consecutive abortions. After low-dose aspirin supplementation, patients with recurrent pregnancy loss showed a highly significant reduction in the PI and S/D. CONCLUSIONS Uterine blood flow decreased during the luteal phase in patients with recurrent pregnancy loss. Low-dose aspirin induced a reversible increase in uterine blood flow and may be of therapeutic value.
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Affiliation(s)
- Xiaomin Kang
- Department of Obstetrics and Gynecology, Ren Ji Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai, China
| | - Tongfei Wang
- Department of Obstetrics and Gynecology, Ren Ji Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai, China
| | - Liyin He
- Department of Obstetrics and Gynecology, Ren Ji Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai, China
| | - Haijing Xu
- Department of Obstetrics and Gynecology, Ren Ji Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai, China
| | - Zhilan Liu
- Department of Obstetrics and Gynecology, Ren Ji Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai, China
| | - Aimin Zhao
- Department of Obstetrics and Gynecology, Ren Ji Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai, China.
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128
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Wang R, Wang T, Lu W, Zhang W, Chen W, Kang X, Huang Y. Three indel variants in chicken LPIN1 exon 6/flanking region are associated with performance and carcass traits. Br Poult Sci 2016; 56:621-30. [PMID: 26523976 DOI: 10.1080/00071668.2015.1113502] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
LPIN1 is a Mg(2+)-dependent phosphatidic acid phosphatase. Variation in chicken LPIN1 exon 6 and its flanking regions were identified and three indel variants in 6 breeds and their associations with performance traits were studied. Seven variants were detected from 6 breeds, which contained a synonymous tri-allelic variant (c.924A/T/C) and three indels. The exon 6 variants detected from chicken breeds were conserved among bird species. The indel variation frequency presented clear differences among breeds. Two coding indels (c.1014-1018del3 and c.1125-1138del12) were multiples of three nucleotides and maintained the open reading frames of LPIN1 proteins. However, they were predicted to result in the clear change of the RNA secondary structure of chicken LPIN1 exon 6 and LPIN1 protein conformation. The association analysis showed that c.871-15-22del6 variation had a significant effect on body weight at hatch (BW0) and 2 weeks (BW2); c. 1014-1018del3 variation had a significant effect on BW4, BW6, caecum length and gizzard weight (GW) traits; c.1125-1138del12 variation had a significant effect on BW12, shank length at 4 weeks (SL4), carcass weight, lactate dehydrogenase traits (LDH), glucose (GLU) and albumin (ALB) traits. The genotype combination for c.1014-1018del3 and c.1125-1138del12 also presented significant effects on SL4, SL8, GW, leg muscle weight, ALB, GLU and LDH. The study demonstrated that chicken LPIN1 has an important effect on body, carcass and organ weight, serum LDH, GLU and ALB level.
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Affiliation(s)
- R Wang
- a College of Livestock Husbandry and Veterinary Engineering , Henan Agricultural University , Zhengzhou , Henan , P. R. China
| | - T Wang
- a College of Livestock Husbandry and Veterinary Engineering , Henan Agricultural University , Zhengzhou , Henan , P. R. China
| | - W Lu
- a College of Livestock Husbandry and Veterinary Engineering , Henan Agricultural University , Zhengzhou , Henan , P. R. China
| | - W Zhang
- a College of Livestock Husbandry and Veterinary Engineering , Henan Agricultural University , Zhengzhou , Henan , P. R. China
| | - W Chen
- a College of Livestock Husbandry and Veterinary Engineering , Henan Agricultural University , Zhengzhou , Henan , P. R. China
| | - X Kang
- a College of Livestock Husbandry and Veterinary Engineering , Henan Agricultural University , Zhengzhou , Henan , P. R. China
| | - Y Huang
- a College of Livestock Husbandry and Veterinary Engineering , Henan Agricultural University , Zhengzhou , Henan , P. R. China
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129
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Liu Z, Chen G, Kang X, Han M, Chen R, Chen C, Wang H. A multiplex allele-specific real-time polymerase chain reaction assay for HLA-B*13:01 genotyping in four Chinese populations. HLA 2016; 88:164-71. [PMID: 27558172 DOI: 10.1111/tan.12863] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 07/10/2016] [Accepted: 08/02/2016] [Indexed: 11/26/2022]
Abstract
Human leukocyte antigen HLA-B*13:01 is identified currently as a marker of individual susceptibility to drug-induced hypersensitivity reaction, such as dapsone-induced hypersensitivity reactions (DIHRs) and trichloroethylene-induced dermatitis. Therefore, screening for the HLA-B*13:01 allele can assist clinics in identifying patients at risk of developing DIHRs. By combining the allele-specific primers with TaqMan probes, we established a single tube, triplex real-time PCR to detect HLA-B*13:01. The reliability of this assay was validated by the comparison of genotyping results with those by sequence-based typing (SBT). With this assay, the distribution of HLA-B*13:01 in a total of 350 blood samples from four ethnic groups: Han, Tibetan, Uighur, and Buyei were determined. A 100% concordance was observed between the results with the established real-time PCR and SBT in 100 samples. The detection limit of this assay was 0.016 ng genomic DNA. The prevalence of HLA-B*13:01 carriers were 11%, 8%, 1%, and 2% in the Buyei (n = 100), Northern Han (n = 100), Tibetan (n = 100), and Uighur (n = 50) populations, respectively. The multiplex real-time PCR assay provided a fast and reliable method for accurate detection of HLA-B*13:01 allele prior to dapsone administration in clinical practice and onset of the reaction after exposure to trichloroethylene.
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Affiliation(s)
- Z Liu
- National Engineering Research Center for Miniaturized Detection Systems, College of Life Science, Northwest University, Xi'an, China
| | - G Chen
- Gynecology Laboratory, Xi an GaoXin Hospital, Xi'an, China
| | - X Kang
- National Engineering Research Center for Miniaturized Detection Systems, College of Life Science, Northwest University, Xi'an, China
| | - M Han
- National Engineering Research Center for Miniaturized Detection Systems, College of Life Science, Northwest University, Xi'an, China
| | - R Chen
- National Engineering Research Center for Miniaturized Detection Systems, College of Life Science, Northwest University, Xi'an, China
| | - C Chen
- National Engineering Research Center for Miniaturized Detection Systems, College of Life Science, Northwest University, Xi'an, China.
| | - H Wang
- National Engineering Research Center for Miniaturized Detection Systems, College of Life Science, Northwest University, Xi'an, China.
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Yang W, Kang X, Liu J, Li H, Ma Z, Jin X, Qian Z, Xie T, Qin N, Feng D, Pan W, Chen Q, Sun H, Wu S. Clock Gene Bmal1 Modulates Human Cartilage Gene Expression by Crosstalk With Sirt1. Endocrinology 2016; 157:3096-107. [PMID: 27253997 PMCID: PMC4967114 DOI: 10.1210/en.2015-2042] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 05/27/2016] [Indexed: 12/22/2022]
Abstract
The critical regulation of the peripheral circadian gene implicated in osteoarthritis (OA) has been recently recognized; however, the causative role and clinical potential of the peripheral circadian rhythm attributable to such effects remain elusive. The purpose of this study was to elucidate the role of a circadian gene Bmal1 in human cartilage and pathophysiology of osteoarthritis. In our present study, the mRNA and protein levels of circadian rhythm genes, including nicotinamide adenine dinucleotide oxidase (NAD(+)) and sirtuin 1 (Sirt1), in human knee articular cartilage were determined. In OA cartilage, the levels of both Bmal1 and NAD(+) decreased significantly, which resulted in the inhibition of nicotinamide phosphoribosyltransferase activity and Sirt1 expression. Furthermore, the knockdown of Bmal1 was sufficient to decrease the level of NAD(+) and aggravate OA-like gene expression changes under the stimulation of IL-1β. The overexpression of Bmal1 relieved the alteration induced by IL-1β, which was consistent with the effect of the inhibition of Rev-Erbα (known as NR1D1, nuclear receptor subfamily 1, group D). On the other hand, the transfection of Sirt1 small interfering RNA not only resulted in a reduction of the protein expression of Bmal1 and a moderate increase of period 2 (per2) and Rev-Erbα but also further exacerbated the survival of cells and the expression of cartilage matrix-degrading enzymes induced by IL-1β. Overexpression of Sirt1 restored the metabolic imbalance of chondrocytes caused by IL-1β. These observations suggest that Bmal1 is a key clock gene to involve in cartilage homeostasis mediated through sirt1 and that manipulating circadian rhythm gene expression implicates an innovative strategy to develop novel therapeutic agents against cartilage diseases.
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Affiliation(s)
- Wei Yang
- Center for Translational Medicine (W.Y., X.K., X.J., Z.Q., T.X., N.Q., D.F., W.P., Q.C., S.W.), the First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases (J.L., H.L., Z.M., H.S.), Ministry of Education, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Hong Hui Hospital (D.F., W.P.), Xi'an Jiaotong University School of Medicine, and Frontier Institute of Science and Technology (Q.C.), Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Department of Pharmacy (N.Q.), Luoyang Orthopedic Hospital, Luoyang, 450052 Henan, China; and Department of Orthopaedics (Q.C.), Brown University Alpert Medical School and Rhode Island Hospital, Providence, Rhode Island 02903
| | - Xiaomin Kang
- Center for Translational Medicine (W.Y., X.K., X.J., Z.Q., T.X., N.Q., D.F., W.P., Q.C., S.W.), the First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases (J.L., H.L., Z.M., H.S.), Ministry of Education, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Hong Hui Hospital (D.F., W.P.), Xi'an Jiaotong University School of Medicine, and Frontier Institute of Science and Technology (Q.C.), Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Department of Pharmacy (N.Q.), Luoyang Orthopedic Hospital, Luoyang, 450052 Henan, China; and Department of Orthopaedics (Q.C.), Brown University Alpert Medical School and Rhode Island Hospital, Providence, Rhode Island 02903
| | - Jiali Liu
- Center for Translational Medicine (W.Y., X.K., X.J., Z.Q., T.X., N.Q., D.F., W.P., Q.C., S.W.), the First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases (J.L., H.L., Z.M., H.S.), Ministry of Education, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Hong Hui Hospital (D.F., W.P.), Xi'an Jiaotong University School of Medicine, and Frontier Institute of Science and Technology (Q.C.), Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Department of Pharmacy (N.Q.), Luoyang Orthopedic Hospital, Luoyang, 450052 Henan, China; and Department of Orthopaedics (Q.C.), Brown University Alpert Medical School and Rhode Island Hospital, Providence, Rhode Island 02903
| | - Huixia Li
- Center for Translational Medicine (W.Y., X.K., X.J., Z.Q., T.X., N.Q., D.F., W.P., Q.C., S.W.), the First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases (J.L., H.L., Z.M., H.S.), Ministry of Education, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Hong Hui Hospital (D.F., W.P.), Xi'an Jiaotong University School of Medicine, and Frontier Institute of Science and Technology (Q.C.), Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Department of Pharmacy (N.Q.), Luoyang Orthopedic Hospital, Luoyang, 450052 Henan, China; and Department of Orthopaedics (Q.C.), Brown University Alpert Medical School and Rhode Island Hospital, Providence, Rhode Island 02903
| | - Zhengmin Ma
- Center for Translational Medicine (W.Y., X.K., X.J., Z.Q., T.X., N.Q., D.F., W.P., Q.C., S.W.), the First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases (J.L., H.L., Z.M., H.S.), Ministry of Education, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Hong Hui Hospital (D.F., W.P.), Xi'an Jiaotong University School of Medicine, and Frontier Institute of Science and Technology (Q.C.), Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Department of Pharmacy (N.Q.), Luoyang Orthopedic Hospital, Luoyang, 450052 Henan, China; and Department of Orthopaedics (Q.C.), Brown University Alpert Medical School and Rhode Island Hospital, Providence, Rhode Island 02903
| | - Xinxin Jin
- Center for Translational Medicine (W.Y., X.K., X.J., Z.Q., T.X., N.Q., D.F., W.P., Q.C., S.W.), the First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases (J.L., H.L., Z.M., H.S.), Ministry of Education, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Hong Hui Hospital (D.F., W.P.), Xi'an Jiaotong University School of Medicine, and Frontier Institute of Science and Technology (Q.C.), Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Department of Pharmacy (N.Q.), Luoyang Orthopedic Hospital, Luoyang, 450052 Henan, China; and Department of Orthopaedics (Q.C.), Brown University Alpert Medical School and Rhode Island Hospital, Providence, Rhode Island 02903
| | - Zhuang Qian
- Center for Translational Medicine (W.Y., X.K., X.J., Z.Q., T.X., N.Q., D.F., W.P., Q.C., S.W.), the First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases (J.L., H.L., Z.M., H.S.), Ministry of Education, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Hong Hui Hospital (D.F., W.P.), Xi'an Jiaotong University School of Medicine, and Frontier Institute of Science and Technology (Q.C.), Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Department of Pharmacy (N.Q.), Luoyang Orthopedic Hospital, Luoyang, 450052 Henan, China; and Department of Orthopaedics (Q.C.), Brown University Alpert Medical School and Rhode Island Hospital, Providence, Rhode Island 02903
| | - Tianping Xie
- Center for Translational Medicine (W.Y., X.K., X.J., Z.Q., T.X., N.Q., D.F., W.P., Q.C., S.W.), the First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases (J.L., H.L., Z.M., H.S.), Ministry of Education, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Hong Hui Hospital (D.F., W.P.), Xi'an Jiaotong University School of Medicine, and Frontier Institute of Science and Technology (Q.C.), Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Department of Pharmacy (N.Q.), Luoyang Orthopedic Hospital, Luoyang, 450052 Henan, China; and Department of Orthopaedics (Q.C.), Brown University Alpert Medical School and Rhode Island Hospital, Providence, Rhode Island 02903
| | - Na Qin
- Center for Translational Medicine (W.Y., X.K., X.J., Z.Q., T.X., N.Q., D.F., W.P., Q.C., S.W.), the First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases (J.L., H.L., Z.M., H.S.), Ministry of Education, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Hong Hui Hospital (D.F., W.P.), Xi'an Jiaotong University School of Medicine, and Frontier Institute of Science and Technology (Q.C.), Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Department of Pharmacy (N.Q.), Luoyang Orthopedic Hospital, Luoyang, 450052 Henan, China; and Department of Orthopaedics (Q.C.), Brown University Alpert Medical School and Rhode Island Hospital, Providence, Rhode Island 02903
| | - Dongxu Feng
- Center for Translational Medicine (W.Y., X.K., X.J., Z.Q., T.X., N.Q., D.F., W.P., Q.C., S.W.), the First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases (J.L., H.L., Z.M., H.S.), Ministry of Education, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Hong Hui Hospital (D.F., W.P.), Xi'an Jiaotong University School of Medicine, and Frontier Institute of Science and Technology (Q.C.), Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Department of Pharmacy (N.Q.), Luoyang Orthopedic Hospital, Luoyang, 450052 Henan, China; and Department of Orthopaedics (Q.C.), Brown University Alpert Medical School and Rhode Island Hospital, Providence, Rhode Island 02903
| | - Wenjie Pan
- Center for Translational Medicine (W.Y., X.K., X.J., Z.Q., T.X., N.Q., D.F., W.P., Q.C., S.W.), the First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases (J.L., H.L., Z.M., H.S.), Ministry of Education, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Hong Hui Hospital (D.F., W.P.), Xi'an Jiaotong University School of Medicine, and Frontier Institute of Science and Technology (Q.C.), Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Department of Pharmacy (N.Q.), Luoyang Orthopedic Hospital, Luoyang, 450052 Henan, China; and Department of Orthopaedics (Q.C.), Brown University Alpert Medical School and Rhode Island Hospital, Providence, Rhode Island 02903
| | - Qian Chen
- Center for Translational Medicine (W.Y., X.K., X.J., Z.Q., T.X., N.Q., D.F., W.P., Q.C., S.W.), the First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases (J.L., H.L., Z.M., H.S.), Ministry of Education, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Hong Hui Hospital (D.F., W.P.), Xi'an Jiaotong University School of Medicine, and Frontier Institute of Science and Technology (Q.C.), Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Department of Pharmacy (N.Q.), Luoyang Orthopedic Hospital, Luoyang, 450052 Henan, China; and Department of Orthopaedics (Q.C.), Brown University Alpert Medical School and Rhode Island Hospital, Providence, Rhode Island 02903
| | - Hongzhi Sun
- Center for Translational Medicine (W.Y., X.K., X.J., Z.Q., T.X., N.Q., D.F., W.P., Q.C., S.W.), the First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases (J.L., H.L., Z.M., H.S.), Ministry of Education, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Hong Hui Hospital (D.F., W.P.), Xi'an Jiaotong University School of Medicine, and Frontier Institute of Science and Technology (Q.C.), Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Department of Pharmacy (N.Q.), Luoyang Orthopedic Hospital, Luoyang, 450052 Henan, China; and Department of Orthopaedics (Q.C.), Brown University Alpert Medical School and Rhode Island Hospital, Providence, Rhode Island 02903
| | - Shufang Wu
- Center for Translational Medicine (W.Y., X.K., X.J., Z.Q., T.X., N.Q., D.F., W.P., Q.C., S.W.), the First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases (J.L., H.L., Z.M., H.S.), Ministry of Education, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Hong Hui Hospital (D.F., W.P.), Xi'an Jiaotong University School of Medicine, and Frontier Institute of Science and Technology (Q.C.), Xi'an Jiaotong University, Xi'an, Shaanxi 710061, People's Republic of China; Department of Pharmacy (N.Q.), Luoyang Orthopedic Hospital, Luoyang, 450052 Henan, China; and Department of Orthopaedics (Q.C.), Brown University Alpert Medical School and Rhode Island Hospital, Providence, Rhode Island 02903
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Liu Z, Xu H, Kang X, Wang T, He L, Zhao A. Allogenic Lymphocyte Immunotherapy for Unexplained Recurrent Spontaneous Abortion: A Meta-Analysis. Am J Reprod Immunol 2016; 76:443-453. [PMID: 27105633 DOI: 10.1111/aji.12511] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 03/20/2016] [Indexed: 11/29/2022] Open
Affiliation(s)
- Zhilan Liu
- Department of Obstetrics and Gynecology; Ren Ji Hospital; School of Medicine; Shanghai Jiao Tong University; Shanghai China
| | - Haijing Xu
- Department of Obstetrics and Gynecology; Ren Ji Hospital; School of Medicine; Shanghai Jiao Tong University; Shanghai China
| | - Xiaomin Kang
- Department of Obstetrics and Gynecology; Ren Ji Hospital; School of Medicine; Shanghai Jiao Tong University; Shanghai China
| | - Tongfei Wang
- Department of Obstetrics and Gynecology; Ren Ji Hospital; School of Medicine; Shanghai Jiao Tong University; Shanghai China
| | - Liying He
- Department of Obstetrics and Gynecology; Ren Ji Hospital; School of Medicine; Shanghai Jiao Tong University; Shanghai China
| | - Aimin Zhao
- Department of Obstetrics and Gynecology; Ren Ji Hospital; School of Medicine; Shanghai Jiao Tong University; Shanghai China
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132
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Li H, Zhou B, Liu J, Li F, Li Y, Kang X, Sun H, Wu S. Administration of progranulin (PGRN) triggers ER stress and impairs insulin sensitivity via PERK-eIF2α-dependent manner. Cell Cycle 2016; 14:1893-907. [PMID: 26039714 DOI: 10.1080/15384101.2015.1041686] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Progranulin (PGRN) has recently emerged as an important regulator for glucose metabolism and insulin sensitivity. However, the direct effects of PGRN in vivo and the underlying mechanisms between PGRN and impaired insulin sensitivity are not fully understood. In this study, mice treated with PGRN for 21 d exhibited the impaired glucose tolerance and insulin sensitivity, remarkable ER stress as well as attenuated insulin signaling in liver and adipose tissue but not in skeletal muscle. Furthermore, treatment of mice with phenyl butyric acid (PBA), a chemical chaperone alleviating ER stress, resulted in a significant restoration of systemic insulin sensitivity and recovery of insulin signaling induced by PGRN. Consistent with these findings in vivo, we also observed that PGRN treatment induced ER stress, impaired insulin signaling in cultured hepatocytes and adipocytes, with such effects being partially nullified by blockade of PERK. Whereas PGRN-deficient hepatocytes and adipocytes were more refractory to palmitate-induced insulin resistance, indicating the causative role of the PERK-eIF2α axis of the ER stress response in action of PGRN. Collectively, our findings supported the notion that PGRN is a key regulator of insulin resistance and that PGRN may mediate its effects, at least in part, by inducing ER stress via the PERK-eIF2α dependent pathway.
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Affiliation(s)
- Huixia Li
- a First Affiliated Hospital; Key Laboratory of Environment and Genes Related to Diseases; Ministry of Education; Medical School of Xi'an Jiaotong University ; Xi'an , Shaanxi , China
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Kang X, Zhang X, Liu Z, Xu H, Wang T, He L, Zhao A. CXCR2-Mediated Granulocytic Myeloid-Derived Suppressor Cells' Functional Characterization and Their Role in Maternal Fetal Interface. DNA Cell Biol 2016; 35:358-65. [PMID: 27027573 DOI: 10.1089/dna.2015.2962] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
To investigate CXC chemokine receptor 2 (CXCR2)-mediated granulocytic myeloid-derived suppressor cells' (MDSCs) (G-MDSCs) functional characterization and their role in maternal-fetal interface. Proportions of CXCR2(+) MDSCs and CXCR2 protein levels in total MDSCs were lower in abortion-prone CBA/J×DBA/2 mice than in CBA/J×BALB/c mice with normal pregnancy. Treatment with CXCR2 neutralizing antibody in vivo at early stage of pregnancy significantly increased the embryo resorption rates and reduced MDSCs abundance in mice from CBA/J×BALB/c matings. Adoptive transfer of MDSCs improved pregnancy outcomes in anti-CXCR2-pretreated CBA/J mice in CBA/J×BALB/C matings. CXCR2 was capable of enhancing the migration of G-MDSCs efficiently instead of monocytic MDSCs (M-MDSCs). In addition to preferential G-MDSC accumulation, arginase I expression as well as arginase I activity of G-MDSCs were regulated by CXCR2. CXCL1, as one of CXCR2 ligands, correlated well with CXCR2-mediated G-MDSCs migration and arginase I activity. CXCR2/CXCL1 axis promotes G-MDSC recruitment and facilitates arginase I expression and activity of these cells at maternal-fetal interface. These findings provide comprehensive insights into how G-MDSCs are recruited to decidual tissues and how local G-MDSCs maintain pregnancy tolerance.
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Affiliation(s)
- Xiaomin Kang
- 1 Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai JiaoTong University , Shanghai, People's Republic of China .,2 Shanghai Key Laboratory of Gynecologic Oncology , Shanghai, People's Republic of China
| | - Xiaoxin Zhang
- 1 Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai JiaoTong University , Shanghai, People's Republic of China .,2 Shanghai Key Laboratory of Gynecologic Oncology , Shanghai, People's Republic of China
| | - Zhilan Liu
- 1 Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai JiaoTong University , Shanghai, People's Republic of China .,2 Shanghai Key Laboratory of Gynecologic Oncology , Shanghai, People's Republic of China
| | - Haijing Xu
- 1 Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai JiaoTong University , Shanghai, People's Republic of China .,2 Shanghai Key Laboratory of Gynecologic Oncology , Shanghai, People's Republic of China
| | - Tongfei Wang
- 1 Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai JiaoTong University , Shanghai, People's Republic of China .,2 Shanghai Key Laboratory of Gynecologic Oncology , Shanghai, People's Republic of China
| | - Liying He
- 1 Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai JiaoTong University , Shanghai, People's Republic of China .,2 Shanghai Key Laboratory of Gynecologic Oncology , Shanghai, People's Republic of China
| | - Aimin Zhao
- 1 Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai JiaoTong University , Shanghai, People's Republic of China .,2 Shanghai Key Laboratory of Gynecologic Oncology , Shanghai, People's Republic of China
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Kang X, Zhang X, Zhao A. Macrophage depletion and TNF-α inhibition prevent resorption in CBA/J × DBA/2 model of CpG-induced abortion. Biochem Biophys Res Commun 2015; 469:704-10. [PMID: 26686416 DOI: 10.1016/j.bbrc.2015.12.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Accepted: 12/04/2015] [Indexed: 12/15/2022]
Abstract
OBJECTIVE To elucidate the mechanism by which embryo-resorption was enhanced by pathogenic CpG ODN motif in abortion-prone CBA/J × DBA/2 model and to develop a counter strategy for normal pregnancy outcome. METHODS This is an animal model-based study. Abortion-prone model is established by CBA/J × DBA/2. An infection was mimicked by CpG ODN injection. RESULTS Embryo-resorption was readily induced by CpG ODN in low doses of CpG ODN (∼25 μg/dam) when intraperitoneally (IP) injected on gestational day(gd) 6.5 in male DBA/2 mated CBA/J female mice. A more modest decline in Progesterone(P4), but not Estrogen(E2) was observed after exposure to CpG ODN in the model. P4 supplement fail to improve pregnancy outcomes, even at pharmocology dose. CpG ODN-induced fetal resorption is prevented by the treatment of anti-F4/80 or by that of anti-TNFα.In the implantation sites, the treatment of anti-F4/80 inhibits the increase both of F4/80(+) macrophage proportion and TNF-αexpression level which are induced by CpG ODN. The anti-TNFαtreatment also recovers CpG ODN-induced reduction of CD4(+)Foxp3(+) T cells. CONCLUSION Circulating P4 is not responsible for the process by which CpG ODN-induced embryonic resorption in an abortion-prone mice. Macrophage depletion and TNF-α inhibition are really noteworthy for CpG ODN-induced pregnancy disruption.
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Affiliation(s)
- Xiaomin Kang
- Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai, 200127, PR China; Shanghai Key Laboratory of Gynecologic Oncology, Shanghai, 200127, PR China
| | - Xiaoxin Zhang
- Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai, 200127, PR China; Shanghai Key Laboratory of Gynecologic Oncology, Shanghai, 200127, PR China
| | - Aimin Zhao
- Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai, 200127, PR China; Shanghai Key Laboratory of Gynecologic Oncology, Shanghai, 200127, PR China.
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Kang X, Zhang X, Liu Z, Xu H, Wang T, He L, Zhao A. Excessive TLR9 signaling contributes to the pathogenesis of spontaneous abortion through impairment of Treg cell survival by activation of Caspase 8/3. Int Immunopharmacol 2015; 29:285-292. [PMID: 26563540 DOI: 10.1016/j.intimp.2015.11.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 10/03/2015] [Accepted: 11/03/2015] [Indexed: 12/25/2022]
Abstract
BACKGROUND The pregnant uterine microenvironment is repleted with Toll-like receptors (TLRs), however, their roles of these receptors in establishing tolerance to growing fetus are largely unknown. RESULT Decidual TLR1, TLR3, TLR4, TLR8 and TLR9 gene expressions were significantly over-expressed in patients of spontaneous abortion compared with elective abortion with normal pregnancy. In particular, the expression of TLR4 and TLR9 mRNA was considerably higher than that of remaining TLRs. We mimic TLR9 signal with combination of its pathogenic ligand CpG ODN and antagonists ODN in a well-established abortion-prone CBA/J×DBA/2 model. CpG ODN dramatically boosted fetal loss and lowered the proportion of Regulatory cells (Treg cells) in vivo. CpG ODN directly triggered the impaired survival and increased activity of Caspase 8/3 of Treg cells in vitro. These effects were blocked by antagonist ODN. CONCLUSION Excessive TLR9 signaling contributed to maternal-fetal tolerance disruption via an effect on Treg cell survival by activation of Caspase 8/3.
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Affiliation(s)
- Xiaomin Kang
- Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai, PR China; Shanghai Key Laboratory of Gynecologic Oncology, Shanghai 200127, PR China
| | - Xiaoxin Zhang
- Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai, PR China; Shanghai Key Laboratory of Gynecologic Oncology, Shanghai 200127, PR China
| | - Zhilan Liu
- Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai, PR China; Shanghai Key Laboratory of Gynecologic Oncology, Shanghai 200127, PR China
| | - Haijing Xu
- Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai, PR China; Shanghai Key Laboratory of Gynecologic Oncology, Shanghai 200127, PR China
| | - Tongfei Wang
- Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai, PR China; Shanghai Key Laboratory of Gynecologic Oncology, Shanghai 200127, PR China
| | - Liying He
- Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai, PR China; Shanghai Key Laboratory of Gynecologic Oncology, Shanghai 200127, PR China
| | - Aimin Zhao
- Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai, PR China; Shanghai Key Laboratory of Gynecologic Oncology, Shanghai 200127, PR China.
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Kang X, Børset M, Burheim O, Haarberg G, Xu Q, Kjelstrup S. Seebeck coefficients of cells with molten carbonates relevant for the metallurgical industry. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.09.059] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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137
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Lu X, Liu Z, Zhang X, Kang X, Shen W, Zhao A. Prothrombotic state of patients with unexplained recurrent spontaneous abortion. Int J Gynaecol Obstet 2015; 131:161-5. [PMID: 26296564 DOI: 10.1016/j.ijgo.2015.04.049] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Revised: 03/31/2015] [Accepted: 07/13/2015] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To determine the effect of aspirin and low-molecular-weight heparin (LMWH) for women affected by recurrent spontaneous abortion (RSA). METHODS The present prospective observational study included women with RSA (≥ 2 previous spontaneous abortions) and those without a history of RSA attending Ren Ji Hospital, Shanghai, China, between March 2011 and March 2014. D-dimer levels, auto-antibodies, and platelet aggregation in response to arachidonic acid (AA) and adenosine diphosphate (ADP) were monitored before pregnancy. Women with unexplained RSA and increased platelet aggregation received low-dose aspirin, and those with elevated D-dimer levels (> 0.75 μg/mL) received LMWH. Platelet aggregation in response to AA and ADP, and D-dimer levels were monitored during pregnancy. RESULTS Among 517 participants with RSA, 325 had unexplained RSA. Compared with 63 control patients, those with unexplained RSA and two, three, four, or at least five previous spontaneous abortions had increased platelet aggregation in response to AA (P < 0.05 for all comparisons) but not to ADP. Among 37 women with unexplained RSA who became pregnant, aspirin reduced platelet aggregation in response to AA (P < 0.001). LMWH reduced D-dimer levels during pregnancy (P < 0.001). Among 37 women with unexplained RSA who became pregnant and completed the study, 33 (89.2%) had a live birth. CONCLUSION Aspirin and LMWH maintained a lower thrombotic state and led to a high live birth rate among patients with unexplained RSA.
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Affiliation(s)
- Xuefeng Lu
- Department of Obstetrics and Gynecology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Zhilan Liu
- Department of Obstetrics and Gynecology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaoxin Zhang
- Department of Obstetrics and Gynecology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaomin Kang
- Department of Obstetrics and Gynecology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Wei Shen
- Department of Clinical Laboratory, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Aimin Zhao
- Department of Obstetrics and Gynecology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
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Kang X, Liu YW, Xu LQ, Ni DD, Yang K, Hiraoka N, Tsuei KD, Zhu LF. OSCILLATOR STRENGTH MEASUREMENT FOR THEA(0–6)–X(0),C(0)–X(0), ANDE(0)–X(0) TRANSITIONS OF CO BY THE DIPOLE (γ,γ) METHOD. ACTA ACUST UNITED AC 2015. [DOI: 10.1088/0004-637x/807/1/96] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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139
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Liu J, Yan Q, Luo F, Shang D, Wu D, Zhang H, Shang X, Kang X, Abdo M, Liu B, Ma Y, Xin Y. Acute cholecystitis associated with infection of Enterobacteriaceae from gut microbiota. Clin Microbiol Infect 2015; 21:851.e1-9. [PMID: 26025761 DOI: 10.1016/j.cmi.2015.05.017] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2014] [Revised: 03/03/2015] [Accepted: 05/12/2015] [Indexed: 02/08/2023]
Abstract
Acute cholecystitis (AC) is one of the most common surgical diseases. Bacterial infection accounts for 50% to 85% of the disease's onset. Since there is a close relationship between the biliary system and the gut, the aims of this study were to characterize and determine the influence of gut microbiota on AC, to detect the pathogenic microorganism in the biliary system, and to explore the relationship between the gut and bile microbiota of patients with AC. A total of 185 713 high-quality sequence reads were generated from the faecal samples of 15 patients and 13 healthy controls by 16S rRNA gene pyrosequencing. Patients' samples were significantly enriched in Akkermansia, Enterobacter and Escherichia/Shigella group. The healthy controls, however, showed significant enrichment of Clostridiales, Coprococcus, Coprobacillaceae, Paraprevotella, Turicibacter and TM7-3 in their faecal samples. Escherichia coli was the main biliary pathogenic microorganism, among others such as Klebsiella spp., Clostridium perfringens, Citrobacter freundii and Enterobacter cloacae in the bile of the patients. Additionally, the amount of bile endotoxin significantly correlated with the number of Enterobacteriaceae, especially E. coli. Our data indicate that Enterobacteriaceae might play essential role in the pathogenesis and/or progress of AC. This was verified in an in vivo model using a pathogenic E. coli isolated from one of the patients in guinea pigs and observed marked gallbladder inflammation and morphologic changes. This study thus provides insight which could be useful for the prevention, diagnosis and treatment of AC and related diseases by controlling the growth of Enterobacteriaceae to alleviate the infection.
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Affiliation(s)
- J Liu
- Department of Biochemistry and Molecular Biology, Dalian Medical University, China
| | - Q Yan
- Department of Biochemistry and Molecular Biology, Dalian Medical University, China; Shenzhen Puensum Genetech Institution, Shenzhen, China
| | - F Luo
- Department of Acute Abdominal Surgery, Second Affiliated Hospital of Dalian Medical University, China
| | - D Shang
- Department of Acute Abdominal Surgery, First Affiliated Hospital of Dalian Medical University, China
| | - D Wu
- Department of Biotechnology, Dalian Medical University, Dalian, China
| | - H Zhang
- Department of Acute Abdominal Surgery, Second Affiliated Hospital of Dalian Medical University, China
| | - X Shang
- Department of Biochemistry and Molecular Biology, Dalian Medical University, China
| | - X Kang
- Department of Biochemistry and Molecular Biology, Dalian Medical University, China
| | - M Abdo
- Department of Biochemistry and Molecular Biology, Dalian Medical University, China
| | - B Liu
- Department of Biochemistry and Molecular Biology, Dalian Medical University, China
| | - Y Ma
- Department of Biochemistry and Molecular Biology, Dalian Medical University, China.
| | - Y Xin
- Department of Biotechnology, Dalian Medical University, Dalian, China.
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Huang Y, Zhang C, Zhang W, Zhang P, Kang X, Chen W. Variation in the chicken LPIN2 gene and association with performance traits. Br Poult Sci 2015; 56:175-83. [PMID: 25668704 DOI: 10.1080/00071668.2015.1008994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The objective of the study was to investigate the distribution of LPIN2 variants and haplotypes among breeds and perform an association analysis of the variants and haplotypes with the broiler traits in chickens. Six breeds were used to study the variation and distribution of chicken LPIN2, and an F2 resource population was used to measure growth traits, carcass traits, meat quality traits and serum biochemistry parameters. A c.-599G>A variant was located in the promoter region of LPIN2 and c.444G>A and c.1730A>T (E577D) coding variant mutations were detected. Linkage disequilibrium tests showed that these three variants were under moderate linkage disequilibrium in the 6 breeds and 7 haplotypes were constructed. The distribution of variation/haplotypes presented clear differences among breeds. Association analysis showed that c.-599G>A was associated with leg muscle weight, jejunum length, ileum length, leg muscle fibre density and leg muscle fibre diameter; c.444G>A was associated with spleen weight, ileum length, body weight at hatch and metatarsus length at 8 weeks; c.1730T>A had significant effects on chicken liver weight, heart weight, body weight at 10 weeks, serum albumin and glucose. Diplotypes were significantly associated with body weight at hatch, heart weight, pancreas weight, duodenum length, leg muscle fibre density and lactate dehydrogenase.
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Affiliation(s)
- Y Huang
- a College of Livestock Husbandry and Veterinary Engineering , Henan Agricultural University , Zhengzhou , Henan , P. R. China
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141
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Liu J, Li H, Zhou B, Xu L, Kang X, Yang W, Wu S, Sun H. PGRN induces impaired insulin sensitivity and defective autophagy in hepatic insulin resistance. Mol Endocrinol 2015; 29:528-41. [PMID: 25664864 DOI: 10.1210/me.2014-1266] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Progranulin (PGRN) has recently emerged as an important regulator for glucose metabolism and insulin sensitivity. However, the underlying mechanisms of PGRN in the regulation of insulin sensitivity and autophagy remain elusive. In this study, we aimed to address the direct effects of PGRN in vivo and to evaluate the potential interaction of impaired insulin sensitivity and autophagic disorders in hepatic insulin resistance. We found that mice treated with PGRN for 21 days exhibited the impaired glucose tolerance and insulin tolerance and hepatic autophagy imbalance as well as defective insulin signaling. Furthermore, treatment of mice with TNF receptor (TNFR)-1 blocking peptide-Fc, a TNFR1 blocking peptide-Fc fusion protein to competitively block the interaction of PGRN and TNFR1, resulted in the restoration of systemic insulin sensitivity and the recovery of autophagy and insulin signaling in liver. Consistent with these findings in vivo, we also observed that PGRN treatment induced defective autophagy and impaired insulin signaling in hepatocytes, with such effects being drastically nullified by the addition of TNFR1 blocking peptide -Fc or TNFR1-small interference RNA via the TNFR1-nuclear factor-κB-dependent manner, indicating the causative role of PGRN in hepatic insulin resistance. In conclusion, our findings supported the notion that PGRN is a key regulator of hepatic insulin resistance and that PGRN may mediate its effects, at least in part, by inducing defective autophagy via TNFR1/nuclear factor-κB.
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Affiliation(s)
- Jiali Liu
- First Affiliated Hospital of the Medical School of Xi'an Jiaotong University, and Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
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Abstract
A UV-vis spectroscopy-based method has been proposed to determine the cross-link density of the samples.
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Affiliation(s)
- Xiaomin Kang
- Key Lab of Advanced Technologies of Materials
- Ministry of Education of China
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - You Yu
- Key Lab of Advanced Technologies of Materials
- Ministry of Education of China
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Yu Bao
- Key Lab of Advanced Technologies of Materials
- Ministry of Education of China
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Wanhao Cai
- Key Lab of Advanced Technologies of Materials
- Ministry of Education of China
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Shuxun Cui
- Key Lab of Advanced Technologies of Materials
- Ministry of Education of China
- Southwest Jiaotong University
- Chengdu 610031
- China
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Wang M, Kang X, Wang H, Guan W. A technique of continent perineal colostomy after laparoscopic abdominoperineal resection. Tech Coloproctol 2014; 18:759-60. [PMID: 24700128 DOI: 10.1007/s10151-014-1143-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 03/17/2014] [Indexed: 11/29/2022]
Affiliation(s)
- M Wang
- Department of General Surgery, Affiliated Drum Tower Hospital of Nanjing, University Medical School, 321 Zhongshan Road, Nanjing, 210008, China
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Wang HX, Chu S, Li J, Lai WN, Wang HX, Wu XJ, Kang X, Qiu YR. Increased IL-17 and IL-21 producing TCRαβ+CD4−CD8− T cells in Chinese systemic lupus erythematosus patients. Lupus 2014; 23:643-54. [PMID: 24554709 DOI: 10.1177/0961203314524467] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2013] [Accepted: 01/23/2014] [Indexed: 01/06/2023]
Abstract
Background: Increased numbers of TCRαβ+CD4−CD8− T cells in the peripheral blood of systemic lupus erythematosus (SLE) patients in the United States and United Kingdom have been reported. However, the proportions of TCRαβ+CD4−CD8− T cells and their involvement in the pathogenesis of SLE in Chinese populations are yet to be determined. Methods: A total of 120 SLE patients, 38 rheumatoid arthritis (RA) patients and 43 normal control subjects were examined. The proportion of TCRαβ+CD4−CD8− T cells in the peripheral blood, Fas expression on these cells, and intracellular cytokine levels in these cells were assessed using flow cytometry. Plasma cytokine concentrations were measured using enzyme-linked immunosorbent assay. Results: The percentages of TCRαβ+CD4−CD8− T cells were increased in Chinese SLE patients, particularly in active SLE patients, correlated with decreased Fas expression on these cells. IL-17 and IL-21 levels in the blood and in TCRαβ+CD4−CD8− T cells from SLE patients were increased. Moreover, a positive correlation was evident between IL-17- and IL-21-producing TCRαβ+CD4−CD8− T cells. Conclusions: Increased TCRαβ+CD4−CD8− T cells expressing inflammatory cytokines, such as IL-17 and IL-21, may be implicated in the pathogenesis of SLE in patients. Appropriate IL-17- and/or IL-21 blockage may be utilized as a novel immunotherapeutic strategy for SLE patients.
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Affiliation(s)
- H-X Wang
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangdong, China
| | - S Chu
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangdong, China
| | - J Li
- Department of Rheumatology, Nanfang Hospital, Southern Medical University, Guangdong, China
| | - W-N Lai
- Department of Rheumatology, Nanfang Hospital, Southern Medical University, Guangdong, China
| | - H-X Wang
- Department of Laboratory Medicine, Nanyang Center Hospital, Henan, China
| | - X-J Wu
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangdong, China
| | - X Kang
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangdong, China
| | - Y-R Qiu
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangdong, China
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Xia T, Wang Y, Wang Y, Shao Y, Kang X, Lan F, Chang D, Li H, Li P, Wang J. The Inspiring Treatment of Body Gamma Knife for Patients With Pulmonary Metastases Derived From Adenoid Cystic Carcinoma of the Head and Neck. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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146
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Yu Y, Kang X, Yang X, Yuan L, Feng W, Cui S. Surface charge inversion of self-assembled monolayers by visible light irradiation: cargo loading and release by photoreactions. Chem Commun (Camb) 2013; 49:3431-3. [PMID: 23505630 DOI: 10.1039/c3cc39081k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
In this study, we find that visible light can trigger both the loading and the release of N-alkyl substituted 4-picolinium on self-assembled monolayers (SAM). The latter process will result in surface-charge inversion of the SAM, which can be used for controlled release of molecules of interest.
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Affiliation(s)
- You Yu
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), Southwest Jiaotong University, Chengdu 610031, China
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147
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Votino C, Jani J, Verhoye M, Bessieres B, Fierens Y, Segers V, Vorsselmans A, Kang X, Cos T, Foulon W, De Mey J, Cannie M. Postmortem examination of human fetal hearts at or below 20 weeks' gestation: a comparison of high-field MRI at 9.4 T with lower-field MRI magnets and stereomicroscopic autopsy. Ultrasound Obstet Gynecol 2012; 40:437-444. [PMID: 22605566 DOI: 10.1002/uog.11191] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 04/28/2012] [Indexed: 05/31/2023]
Abstract
OBJECTIVES To compare the diagnostic usefulness of high-field with low-field magnetic resonance imaging (MRI) and stereomicroscopic autopsy for examination of the heart in fetuses at or under 20 weeks' gestation. METHODS Prior to invasive stereomicroscopic autopsy, MRI scans at 9.4, 3.0 and 1.5 T were performed on 24 fetuses between 11 and 20 weeks' gestation, including 10 fetuses with cardiac abnormalities. The ability to visualize different heart structures was evaluated according to the different field strength MRI magnets used and gestational age at examination. RESULTS On 1.5- and 3.0-T MRI, only the heart situs and four-chamber view could be visualized consistently (in 75% or more of cases) when the fetus was beyond 16 weeks' gestation, but other heart structures could not be visualized for fetuses at any gestational age. In contrast, using high-field MRI at 9.4 T, the heart situs, four-chamber view and the outflow tracts could be visualized in all fetuses irrespective of gestational age. Using high-field MRI, the sensitivity for detecting an abnormality of the four-chamber view was 66.7% (95% CI, 30.1-92.1%) with a specificity of 80.0% (95% CI, 51.9-95.4%). For abnormalities of the outflow tracts, sensitivity was 75.0% (95% CI, 20.3-95.9%) and specificity 100.0% (95% CI, 83.3-100.0%). Eight fetuses out of 10 with congenital heart disease (CHD) were classified as having major CHD. High-field MRI at 9.4 T was able to identify seven out of the eight cases of major CHD. CONCLUSION High-field MRI at 9.4 T seems to be an acceptable alternative approach to invasive stereomicroscopic autopsy for fetuses with CHD at or below 20 weeks' gestation.
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Affiliation(s)
- C Votino
- Department of Obstetrics and Gynecology, University Hospital Brugmann, Brussels, Belgium
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Cate AD, Herron TJ, Kang X, Yund EW, Woods DL. Intermodal attention modulates visual processing in dorsal and ventral streams. Neuroimage 2012; 63:1295-304. [PMID: 22917986 DOI: 10.1016/j.neuroimage.2012.08.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Revised: 06/13/2012] [Accepted: 08/05/2012] [Indexed: 11/26/2022] Open
Abstract
Attending to visual objects while ignoring information from other modalities is necessary for performing difficult visual discriminations, but it is unclear how selecting between sensory modalities alters processing within the visual system. We used an audio-visual intermodal selective attention paradigm with fMRI to study the effects of visual attention on cortical activity in the absence of competitive interactions between multiple visual stimuli. Complex stimuli (faces and words) activated higher visual areas even in the absence of visual attention. These stimulus-dependent activations (SDAs) covered foveal retinotopic cortex, extended ventrally to the anterior fusiform gyrus and dorsally to include multiple distinct foci in the intraparietal sulcus (IPS). Attention amplified the baseline response in posterior retinotopic regions and altered activity in different ways in the extrastriate dorsal and ventral pathways. The majority of the IPS was strongly and exclusively activated by visual attention: attention-related modulations (ARMs) encompassed and spread well beyond the focal SDAs. In contrast, in the fusiform gyrus only a small subset of the regions activated by unattended stimuli showed ARMs. Ventral cortex was also heterogeneous: we found a distinct ventrolateral region in the occipitotemporal sulcus (OTS) that was activated exclusively by attention, showing neither SDAs nor any significant stimulus preferences. Attention-dependent activations in the IPS and the OTS suggest that these regions play critical roles in intermodal visual attention.
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Affiliation(s)
- A D Cate
- Psychology Department, Virginia Polytechnic Institute and State University, 109 Williams Hall, Blacksburg, VA 24061, USA.
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Cate A, Herron T, Kang X, Woods D. Cortical surface-based meta-analysis of human visuotopic regions from published stereotaxic coordinates. J Vis 2012. [DOI: 10.1167/12.9.523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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